Forum: Reliability & Maintainability Questions and Answers

Topic: Reliability & Maintainability Questions and Answers

Topic Posted by: Reliability & Maintainability Forum (src_forum@alionscience.com )
Organization: System Reliability Center
Date Posted: Mon Aug 31 12:47:36 US/Eastern 1998

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Original Message:

Posted by: Tom
Date posted: Mon Mar 5 16:17:46 US/Eastern 2007
Subject: B Life Formula
Message:
This formula was provided as a method for calculating B life as a function of the number of failures and test time. I am not quite sure of its derivation. Any thoughts would be appreciated. Thanks.

BLIFE = SQRT (∑(accel hr)2 (ln ( 1/reliability)) / chi-Square (1 desired confidence), (2n + 2))

n = number of failure.


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